It was the middle of class, as Chuuya and Dazai were sitting at their desk in the back. The lecture was rather boring, and so they decided to entertain themselves, with that eventually turning into a fight.

Both of them were kicking their legs and lightly hitting each other, occasionally making sure the teacher wasn't looking, as they whispered every time they spoke. Dazai lightly hit Chuuya's arm.

"Shitty Mackerel!"

and Chuuya hit him right back, though without using too much force.